A cast steel core shown below has the following pertinent dimensions: A-40 cm^2, A-80 cm^2 - 0.5m, and J-1.2m. Find the mmf (NI required to produce a flux of 0.0032 Wb in the core. What is the unit of mmf? The B-H curve of the cast steel core is given below. Put your final answers in the blank spaces below.
Nf (mmf)
Unit of mmf:
1.2
1.0-
0.8 B (T) 0.6
Cast steel
0.4
0.2 0.16 0.08 0 0
100
200
300
400 500 600 H (A-t/m)
700
800
006
1000